Blotchy LCD panel.
 

Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite
carefully to get it to show-up for the photo. It is noticeable fairly
often when watching TV though, so it's given me an excuse to look for a
new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration.
It's not something I expected on an LCD. It's used as a PC monitor quite
a lot and it often ends up showing a static image for quite a while. I
don't recognise the shape of the blotches though.
Another possibility is that it occasionally cops some direct sunlight
through a venetian blind, which might account for the horizontal lines,
though I'd have thought the shadows would have swept across the screen
as the sun moved.

Any ideas?

Cheers,

Colin.

Blotchy LCD panel.
 

Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be wearing very well. It's sprouted some dark patches on the
panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite carefully to get it to show-up for the photo. It is noticeable
fairly often when watching TV though, so it's given me an excuse to look for a new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration. It's not something I expected on an LCD. It's used as a
PC monitor quite a lot and it often ends up showing a static image for quite a while. I don't recognise the shape of the blotches
though.
Another possibility is that it occasionally cops some direct sunlight through a venetian blind, which might account for the
horizontal lines, though I'd have thought the shadows would have swept across the screen as the sun moved.

Any ideas?

Cheers,

Colin.

Me too Colin, probably a bit worse than yours if anything.
Samsung LE32R87BD. What's yours.
The blotchiness and the burn-in seem to be related, some people think LCDs
don't suffer from burn-in, these do!

Seems to be worse when it's been on a while, I've considered putting a fan or two on the ventilation slots.

--
Graham.

%Profound_observation%

Blotchy LCD panel.
 

On Fri, 14 Jan 2011 20:25:35 -0000, "Graham." wrote:

Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be wearing very well. It's sprouted some dark patches on the
panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite carefully to get it to show-up for the photo. It is noticeable
fairly often when watching TV though, so it's given me an excuse to look for a new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration. It's not something I expected on an LCD. It's used as a
PC monitor quite a lot and it often ends up showing a static image for quite a while. I don't recognise the shape of the blotches
though.
Another possibility is that it occasionally cops some direct sunlight through a venetian blind, which might account for the
horizontal lines, though I'd have thought the shadows would have swept across the screen as the sun moved.

Any ideas?

Cheers,

Colin.

Me too Colin, probably a bit worse than yours if anything.
Samsung LE32R87BD. What's yours.
The blotchiness and the burn-in seem to be related, some people think LCDs
don't suffer from burn-in, these do!

Seems to be worse when it's been on a while, I've considered putting a fan or two on the ventilation slots.

I think we've discussed this before. I have a feeling that last time I
investigated this the simplest recommendation was to leave it switched
off for a few days.

A Google, or whatever, search for "LCD image retention" or "LCD image
persistence" will find lots of comments and articles on the subject.

--
Peter Duncanson
(in uk.tech.digital-tv)

Blotchy LCD panel.
 

On 14/01/11 20:25, Graham. wrote:

Me too Colin, probably a bit worse than yours if anything.
Samsung LE32R87BD. What's yours.

It's LE32R74BD. I think yours is younger than mine.

The blotchiness and the burn-in seem to be related, some people think LCDs
don't suffer from burn-in, these do!

It's all a bit disappointing really. Whatever's causing it, the telly is
well on the way to being knackered after just a few years.


Seems to be worse when it's been on a while, I've considered putting a fan or two on the ventilation slots.

It might be worth a try, though I haven't noticed that effect on mine.
The photo was taken with the panel cold.

Cheers,

Colin.

Blotchy LCD panel.
 

On 14/01/11 21:27, Peter Duncanson wrote:

I think we've discussed this before. I have a feeling that last time I
investigated this the simplest recommendation was to leave it switched
off for a few days.

That's assuming it *is* "image retention". The blotchiness doesn't look
like that to me. It doesn't bear any resemblance to anything the PC
normally ends up showing. If anything was getting burned in, I'd expect
it to look like a Club Penguin character.


A Google, or whatever, search for "LCD image retention" or "LCD image
persistence" will find lots of comments and articles on the subject.

But the accompanying pictures tend not to look like the damage on my
screen. They look like the images that burned them, not just vague smudges.

Having said that, The PC will have a screen-saver before the new telly
arrives...

Cheers,

Colin.

Blotchy LCD panel.
 

On 14/01/11 22:36, Java Jive wrote:
Have you checked for any manufacturer's warranty still in force?

I'd assumed it was only warranted for a year.

Also, I've had at least one letter telling me the manufacturers warranty
has expired, so it must be true ;o)

Cheers,

Colin.

Blotchy LCD panel.
 

On Fri, 14 Jan 2011 23:06:52 +0000, Colin Stamp
wrote:

On 14/01/11 21:27, Peter Duncanson wrote:

I think we've discussed this before. I have a feeling that last time I
investigated this the simplest recommendation was to leave it switched
off for a few days.

That's assuming it *is* "image retention". The blotchiness doesn't look
like that to me. It doesn't bear any resemblance to anything the PC
normally ends up showing. If anything was getting burned in, I'd expect
it to look like a Club Penguin character.


A Google, or whatever, search for "LCD image retention" or "LCD image
persistence" will find lots of comments and articles on the subject.

But the accompanying pictures tend not to look like the damage on my
screen. They look like the images that burned them, not just vague smudges.

Yes.

I had a longer look at the picture you posted. It is difficult to
imagine what image could have caused that effect.

Having said that, The PC will have a screen-saver before the new telly
arrives...

Cheers,

Colin.


--
Peter Duncanson
(in uk.tech.digital-tv)

Blotchy LCD panel.
 

"Colin Stamp" wrote in message
o.uk...
Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite
carefully to get it to show-up for the photo. It is noticeable fairly
often when watching TV though, so it's given me an excuse to look for a
new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration.
It's not something I expected on an LCD. It's used as a PC monitor quite a
lot and it often ends up showing a static image for quite a while. I don't
recognise the shape of the blotches though.
Another possibility is that it occasionally cops some direct sunlight
through a venetian blind, which might account for the horizontal lines,
though I'd have thought the shadows would have swept across the screen as
the sun moved.

Any ideas?


I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel, but could it be that one, or part of one is
failing?

--

Brian Gregory. (In the UK)

To email me remove the letter vee.

Blotchy LCD panel.
 

On 14/01/2011 19:29, Colin Stamp wrote:
Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite
carefully to get it to show-up for the photo. It is noticeable fairly
often when watching TV though, so it's given me an excuse to look for a
new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration.
It's not something I expected on an LCD. It's used as a PC monitor quite
a lot and it often ends up showing a static image for quite a while. I
don't recognise the shape of the blotches though.
Another possibility is that it occasionally cops some direct sunlight
through a venetian blind, which might account for the horizontal lines,
though I'd have thought the shadows would have swept across the screen
as the sun moved.

Any ideas?

Cheers,

Colin.

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.

Glenn.

Blotchy LCD panel.
 

I'd have thought the shadows would have swept across the screen
as the sun moved.



sun....

and we assumed you were in the UK.

Blotchy LCD panel.
 

On 14/01/2011 23:54, Peter Duncanson wrote:
On Fri, 14 Jan 2011 23:06:52 +0000, Colin Stamp
wrote:

On 14/01/11 21:27, Peter Duncanson wrote:

I think we've discussed this before. I have a feeling that last time I
investigated this the simplest recommendation was to leave it switched
off for a few days.

That's assuming it *is* "image retention". The blotchiness doesn't look
like that to me. It doesn't bear any resemblance to anything the PC
normally ends up showing. If anything was getting burned in, I'd expect
it to look like a Club Penguin character.


A Google, or whatever, search for "LCD image retention" or "LCD image
persistence" will find lots of comments and articles on the subject.

But the accompanying pictures tend not to look like the damage on my
screen. They look like the images that burned them, not just vague smudges.

Yes.

I had a longer look at the picture you posted. It is difficult to
imagine what image could have caused that effect.

Having said that, The PC will have a screen-saver before the new telly
arrives...

Cheers,

Colin.



Has anything been pressing on the screen, eg over enthusiastic
dusting/wiping. I've seen something similar on laptops at work that
have been fitted with a privacy screen that put pressure on the LCD when
closed. This could be somewhat eased with gentle massage with a dry
cloth but not eradicated (but don't press too hard).

Does it change with gentle pressure?

Chris K

Blotchy LCD panel.
 

On 15/01/11 15:32, Chris K wrote:

Has anything been pressing on the screen, eg over enthusiastic
dusting/wiping. I've seen something similar on laptops at work that have
been fitted with a privacy screen that put pressure on the LCD when
closed. This could be somewhat eased with gentle massage with a dry
cloth but not eradicated (but don't press too hard).

We've been fairly careful with it, and no cleaning in this house could
never be described as over enthusiastic ;o). It does get the odd prod
from kids fingers though (in spite of severe beatings meted out to any
offenders) so it could be a possibility.


Does it change with gentle pressure?

I've just tried squishing it about a bit. It doesn't seem to make any
difference beyond the normal changes you get when the pressure is
actually on the panel.

Cheers,

Colin.

Blotchy LCD panel.
 

On 15/01/11 03:21, Brian Gregory [UK] wrote:

I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel, but could it be that one, or part of one is
failing?

I'd wondered about a backlighting problem too, though I'd thought it
might be dust somehow getting in and settling between the backlight
panel and the LCD panel. I'd sort-of counted it out though, because the
blotches are only visible at certain brightness levels.

Cheers,

Colin.

Blotchy LCD panel.
 

On 15/01/11 07:47, Glenn Millar wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.

Sounds interesting, though I've long since thrown out any paperwork that
came with the telly and I can't even remember the name of the web
retailer it came from.

I think I'll offer the telly to my dad, who's currently squinting at a
19" 4:3 set. The replacement is on order...

Cheers,

Colin.

Blotchy LCD panel.
 

On Sun, 16 Jan 2011 11:05:26 +0000, Colin Stamp
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.

Sounds interesting, though I've long since thrown out any paperwork that
came with the telly

I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

Blotchy LCD panel.
 

"Colin Stamp" wrote in message o.uk...
On 15/01/11 03:21, Brian Gregory [UK] wrote:

I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel, but could it be that one, or part of one is
failing?

I'd wondered about a backlighting problem too, though I'd thought it might be dust somehow getting in and settling between the
backlight panel and the LCD panel. I'd sort-of counted it out though, because the blotches are only visible at certain brightness
levels.

Cheers,

Colin.

Here's mine
http://rabstaff.99k.org/lcd1.jpg

Same conditions except immediately prior to taking picture the set had been displaying a
4:3 pillar-box programme for half an hour.
http://rabstaff.99k.org/lcd2.jpg

--
Graham.

%Profound_observation%

Blotchy LCD panel.
 

On 16/01/2011 13:31, Paul Ratcliffe wrote:
On Sun, 16 Jan 2011 11:05:26 +0000, Colin
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.
Sounds interesting, though I've long since thrown out any paperwork that
came with the telly
I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.
We have a Poloride TV in the works canteen and that is doing the same
type of blotching. Been in use for about 2 years.

Blotchy LCD panel.
 

On 16/01/11 14:08, Graham. wrote:

Here's mine
http://rabstaff.99k.org/lcd1.jpg

Ouch! That does look bad. It's interesting that it's showing the same
horizontal banding as mine. It suggests that my theory about sunlight
through the venetian blind is probably wrong.

Same conditions except immediately prior to taking picture the set had been displaying a
4:3 pillar-box programme for half an hour.
http://rabstaff.99k.org/lcd2.jpg

That looks much more like "classic" LCD image retention. I notice that
on mine too sometimes, but it always fades away over a few minutes.

Cheers,

Colin.

Blotchy LCD panel.
 

On 16/01/11 13:31, Paul Ratcliffe wrote:

I never understand why people do this.

I only have the content of your last post to go on, but you seem to be
the kind of person that will never understand very many things about
very many people. Have you considered giving up trying?

Why throw it away when you've still got the item to which it refers?

Oh my god! The paperwork retention police are coming to get me! How
could I have done something so stupid? I shall have to consider suicide.
It's the only way I can get myself out of this *terrible* mess I've got
myself into.

It's just a stupid thing to do, but then most people seem to be
stupid or pig-headed about such matters.

Your post was a *properly* stupid thing to do. The attitude and tone
make you come across as a complete bellend I'm afraid.

Cheers,

Colin.

Blotchy LCD panel.
 

Paul Ratcliffe wrote:
On Sun, 16 Jan 2011 11:05:26 +0000, Colin Stamp
wrote:

Had a customer with a Samsung LCD TV with the same problem. After much
complaining Samsung, via the retailer replaced the TV.
Sounds interesting, though I've long since thrown out any paperwork that
came with the telly

I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

I threw my marriage licence away but it didn't make any difference.

Bill

Blotchy LCD panel.
 

On 16/01/2011 13:31, Paul Ratcliffe wrote:

I never understand why people do this. Why throw it away when you've still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

I've just spent half of today cleaning out my study. It's amazing how
many sets of instructions I had for items that have long since been
scrapped. And a pile of obsolete PC games 2ft high... (anyone?)

Andy

Blotchy LCD panel.
 

Paul Ratcliffe wrote:
It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

You are distancing yourself from the common herd -- a risky position to
put yourself in when the issue is intelligence.

Bill

Blotchy LCD panel.
 

On Sun, 16 Jan 2011 15:34:39 +0000, Colin Stamp
wrote:

I only have the content of your last post to go on, but you seem to be
the kind of person that will never understand very many things about
very many people. Have you considered giving up trying?

Yes, with morons like you.

Why throw it away when you've still got the item to which it refers?

Oh my god! The paperwork retention police are coming to get me! How
could I have done something so stupid? I shall have to consider suicide.
It's the only way I can get myself out of this *terrible* mess I've got
myself into.

You were the one moaning you didn't have the paperwork. I couldn't give
a **** what you do, but don't come on hear moaning about your own
stupidity.

Your post was a *properly* stupid thing to do. The attitude and tone
make you come across as a complete bellend I'm afraid.

Ooooooo....

jerry insult
Talking about yourself again.
/jerry insult

I knew your reaction would be like this. You blame me for exposing
your cluelessness and stupidity. Typical of arses like you.

Blotchy LCD panel.
 

On 17/01/11 20:00, Paul Ratcliffe wrote:
On Sun, 16 Jan 2011 15:34:39 +0000, Colin
wrote:

I only have the content of your last post to go on, but you seem to be
the kind of person that will never understand very many things about
very many people. Have you considered giving up trying?

Yes, with morons like you.

Oh dear. You seem to have gone a bit incandescent. Was it something I said?


Why throw it away when you've still got the item to which it refers?

Oh my god! The paperwork retention police are coming to get me! How
could I have done something so stupid? I shall have to consider suicide.
It's the only way I can get myself out of this *terrible* mess I've got
myself into.

You were the one moaning you didn't have the paperwork.

I don't recall "moaning" anywhere. The paperwork is gone. I know it's a
dreadful state-of-affairs being left with a four-year-old telly and no
paperwork, but I've got over it. I think you need to do the same.

I couldn't give a **** what you do

Oh come now. You seem to be taking quite an interest.

but don't come on hear moaning about your own stupidity.

The word is "here". What were you saying about stupidity again?


Your post was a *properly* stupid thing to do. The attitude and tone
make you come across as a complete bellend I'm afraid.

Ooooooo....

jerry insult
Talking about yourself again.
/jerry insult

I knew your reaction would be like this.

Of course you did. Surely the sole intention of your first post was to
start some kind of slanging match. If it wasn't, then you seriously need
to develop a *much* less confrontational writing style.

You blame me for exposing
your cluelessness and stupidity. Typical of arses like you.

You ask pretty-much specifically for a fight, then you act all hurt at
the very first handbag-swing. I was only trying to give you what you so
obviously wanted. There's just no pleasing some people.

Cheers,

Colin.

Blotchy LCD panel.
 

On the subject of missing instruction books, when my plumber came round
he read the model number off the boiler and said, 'Mind if I use your
computer, guvnor*, 'cos my laptop is ****ed'. He then downloaded the
user instructions and the service sheet.

*the use of the word 'guvnor' is part of our elaborate game of master
and servant. When I fix his satellite system I call him 'guvnor'.

Bill

Blotchy LCD panel.
 

"Bill Wright" wrote in message ...
On the subject of missing instruction books, when my plumber came round he read the model number off the boiler and said, 'Mind if
I use your computer, guvnor*, 'cos my laptop is ****ed'. He then downloaded the user instructions and the service sheet.

*the use of the word 'guvnor' is part of our elaborate game of master and servant. When I fix his satellite system I call him
'guvnor'.

Bill

In parts of Lancashire you might, in the Presence of young children, be called Master,
as in "If you go near the back of that telly, that master will electrocute you with them wires."

--
Graham.

%Profound_observation%

Blotchy LCD panel.
 

"Andy Champ" wrote in message
. uk...
On 16/01/2011 13:31, Paul Ratcliffe wrote:

I never understand why people do this. Why throw it away when you've
still
got the item to which it refers? It's just a stupid thing to do, but then
most people seem to be stupid or pig-headed about such matters.

I've just spent half of today cleaning out my study. It's amazing how
many sets of instructions I had for items that have long since been
scrapped. And a pile of obsolete PC games 2ft high... (anyone?)

Is that the way you sell PC games, like buying books by the metre?

--
Max Demian

Blotchy LCD panel.
 

On Jan 14, 7:29*pm, Colin Stamp wrote:
Hi all,

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

http://www.stamp.plus.com/Photos/duff_telly.JPG

It's not all that bad yet - I had to select the shade of grey quite
carefully to get it to show-up for the photo. It is noticeable fairly
often when watching TV though, so it's given me an excuse to look for a
new set. Every cloud has a silver lining :o)

I just wondered whether anyone else has seen this kind of deterioration.
It's not something I expected on an LCD. It's used as a PC monitor quite
a lot and it often ends up showing a static image for quite a while. I
don't recognise the shape of the blotches though.
Another possibility is that it occasionally cops some direct sunlight
through a venetian blind, which might account for the horizontal lines,
though I'd have thought the shadows would have swept across the screen
as the sun moved.

Any ideas?

Cheers,

Colin.

Try this if you can plug a PC into the TV.
http://www.jscreenfix.com/
It might just work.

Blotchy LCD panel.
 

On 18/01/11 12:22, Dr Hfuhruhurr wrote:

Try this if you can plug a PC into the TV.
http://www.jscreenfix.com/
It might just work.

Thanks for that. It certainly looks worth a try. It'll have to wait a
bit though. They new telly arrived today so the Samsung is out in the
shed waiting to go to my dads...

Cheers,

Colin.

Blotchy LCD panel.
 

In article , Colin
Stamp writes

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

My first thought was to wonder if it could be a bacterial infection of
some sort. Have a close look with a good magnifying glass.

--
(\__/)
(='.'=)
(")_(")

Blotchy LCD panel.
 

In article , Brian

I don't know how the cold cathode fluorescent tube or tubes are typically
arraigned behind a LCD panel

Along the edges.

--
(\__/)
(='.'=)
(")_(")

Blotchy LCD panel.
 

On 19/01/11 05:11, Mike Tomlinson wrote:
In [email protected] w.co.uk, Colin
writes

I have a four year old Samsung 32" LCD telly which doesn't seem to be
wearing very well. It's sprouted some dark patches on the panel...

My first thought was to wonder if it could be a bacterial infection of
some sort. Have a close look with a good magnifying glass.

Sounds like an interesting idea. There's nothing I can see on the
surface, so it would have to be between the LCD and the backlight. I'd
first wondered if dust had got in there, maybe borne on convection
currents or something.

The effect depends heavily on the brightness of the image though. It
can't be seen on bright or dark images. It shows up best on mid levels.
The photo was taken on 50% grey. That suggests to me that it's a problem
with the response of the LCD panel itself rather than anything external
blocking the light.

Cheers,

Colin.